Minimise code size when using multiple sensors

[jeroendoggen]

From jeroendoggen on June 06, 2013 09:55:09

Pass analog port in constructor or 'getDistanceCentimeter'? Re-use the same code for each sensor? (is this worth the effort)

Original issue: http://code.google.com/p/arduino-distance-sensor-library/issues/detail?id=2